(a) (i) What is a simple machine?
(ii) Give two examples of a simple machine

(b) (i) What is rusting?
(ii) State two effects of rusting

(c) (i) What are food nutrients?
(ii) Classify the following food items as carbohydrate, fats and oil or protein:
Beans, palm fruits, meat, margarine, bread and maize.

(d) (i) State two effects of malnutrition in farm animals.
(ii) Mention one disease of farm animals caused by virus.